[stable/wordpress] Add Prometheus ServiceMonitor

stable/wordpress/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: wordpress
-version: 5.12.6
+version: 5.13.0
 appVersion: 5.2.2
 description: Web publishing platform for building blogs and websites.
 icon: https://bitnami.com/assets/stacks/wordpress/img/wordpress-stack-220x234.png

stable/wordpress/README.md

@@ -88,9 +88,11 @@ The following table lists the configurable parameters of the WordPress chart and
 | `service.type`                   | Kubernetes Service type                                                       | `LoadBalancer`                                               |
 | `service.port`                   | Service HTTP port                                                             | `80`                                                         |
 | `service.httpsPort`              | Service HTTPS port                                                            | `443`                                                        |
+| `service.metricsPort`              | Service Metrics port                                                            | `9117`                                                        |
 | `service.externalTrafficPolicy`  | Enable client source IP preservation                                          | `Cluster`                                                    |
 | `service.nodePorts.http`         | Kubernetes http node port                                                     | `""`                                                         |
 | `service.nodePorts.https`        | Kubernetes https node port                                                    | `""`                                                         |
+| `service.nodePorts.metrics`      | Kubernetes metrics node port                                                  | `""`                                                         |
 | `service.extraPorts`             | Extra ports to expose in the service (normally used with the `sidecar` value) | `nil`                                                        |
 | `healthcheckHttps`               | Use https for liveliness and readiness                                        | `false`                                                      |
 | `livenessProbeHeaders`           | Headers to use for livenessProbe                                              | `nil`                                                        |
@@ -123,6 +125,13 @@ The following table lists the configurable parameters of the WordPress chart and
 | `metrics.image.pullSecrets`      | Specify docker-registry secret names as an array                              | `[]` (does not add image pull secrets to deployed pods)      |
 | `metrics.podAnnotations`         | Additional annotations for Metrics exporter pod                               | `{prometheus.io/scrape: "true", prometheus.io/port: "9117"}` |
 | `metrics.resources`              | Exporter resource requests/limit                                              | `{}`                                                         |
+| `metrics.serviceMonitor.enabled`     | Create ServiceMonitor Resource for scraping metrics using PrometheusOperator   | `false`                                   |
+| `metrics.serviceMonitor.namespace`   | Namespace where servicemonitor resource should be created                      | `nil`                                     |
+| `metrics.serviceMonitor.interval`    | Specify the interval at which metrics should be scraped                        | `30s`                                     |
+| `metrics.serviceMonitor.scrapeTimeout`| Specify the timeout after which the scrape is ended                           | `nil`                                     |
+| `metrics.serviceMonitor.relabellings`| Specify Metric Relabellings to add to the scrape endpoint                      | `nil`                                     |
+| `metrics.serviceMonitor.honorLabels` | honorLabels chooses the metric's labels on collisions with target labels.      | `false`                                   |
+| `metrics.serviceMonitor.additionalLabels`| Used to pass Labels that are required by the Installed Prometheus Operator | `{}`                                      |
 | `sidecars`                       | Attach additional containers to the pod                                       | `nil`                                                        |
 | `updateStrategy`                 | Set up update strategy                                                        | `RollingUpdate`                                              |
 

stable/wordpress/templates/servicemonitor.yaml

@@ -0,0 +1,36 @@
+{{- if and .Values.metrics.enabled .Values.metrics.serviceMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ template "wordpress.fullname" . }}
+  {{- if .Values.metrics.serviceMonitor.namespace }}
+  namespace: {{ .Values.metrics.serviceMonitor.namespace }}
+  {{- end }}
+  labels:
+    app: "{{ template "wordpress.fullname" . }}"
+    chart: {{ template "wordpress.chart" .  }}
+    heritage: "{{ .Release.Service }}"
+    release: "{{ .Release.Name }}"
+    {{- if .Values.metrics.serviceMonitor.additionalLabels }}
+{{ toYaml .Values.metrics.serviceMonitor.additionalLabels | indent 4 }}
+    {{- end }}
+spec:
+  endpoints:
+  - port: metrics
+    interval: {{ .Values.metrics.serviceMonitor.interval }}
+    {{- if .Values.metrics.serviceMonitor.scrapeTimeout }}
+    scrapeTimeout: {{ .Values.metrics.serviceMonitor.scrapeTimeout }}
+    {{- end }}
+    honorLabels: {{ .Values.metrics.serviceMonitor.honorLabels }}
+    {{- if .Values.metrics.serviceMonitor.relabellings }}
+    metricRelabelings:
+{{ toYaml .Values.metrics.serviceMonitor.relabellings | indent 6 }}
+    {{- end }}
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      app: "{{ template "wordpress.fullname" . }}"
+      release: "{{ .Release.Name }}"
+{{- end }}

stable/wordpress/templates/svc.yaml

@@ -33,6 +33,16 @@ spec:
       {{- else if eq .Values.service.type "ClusterIP" }}
       nodePort: null
       {{- end }}
+      {{- if .Values.metrics.enabled }}
+    - name: metrics
+      port: {{ .Values.service.metricsPort }}
+      targetPort: metrics
+      {{- if (and (eq .Values.service.type "NodePort") (not (empty .Values.service.nodePorts.metrics)))}}
+      nodePort: {{ .Values.service.nodePorts.metrics }}
+      {{- else if eq .Values.service.type "ClusterIP" }}
+      nodePort: null
+      {{- end }}
+      {{- end }}
 {{- if .Values.service.extraPorts }}
 {{ toYaml .Values.service.extraPorts | indent 4 }}
 {{- end }}      

stable/wordpress/values-production.yaml

@@ -179,13 +179,17 @@ service:
   port: 80
   # HTTPS Port
   httpsPort: 443
+  # metrics Port
+  metricsPort: 9117
   ##
   ## nodePorts:
   ##   http: <to set explicitly, choose port between 30000-32767>
   ##   https: <to set explicitly, choose port between 30000-32767>
+    ##   metrics: <to set explicitly, choose port between 30000-32767>
   nodePorts:
     http: ""
     https: ""
+    metrics: ""
   ## Enable client source IP preservation
   ## ref http://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip
   ##
@@ -345,6 +349,26 @@ metrics:
   ##
   # resources: {}
 
+  ## Prometheus Service Monitor
+  ## ref: https://github.com/coreos/prometheus-operator
+  ##      https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#endpoint
+  serviceMonitor:
+    ## If the operator is installed in your cluster, set to true to create a Service Monitor Entry
+    enabled: false
+    ## Specify the namespace in which the serviceMonitor resource will be created
+    # namespace: ""
+    ## Specify the interval at which metrics should be scraped
+    interval: 30s
+    ## Specify the timeout after which the scrape is ended
+    # scrapeTimeout: 30s
+    ## Specify Metric Relabellings to add to the scrape endpoint
+    # relabellings:
+    ## Specify honorLabels parameter to add the scrape endpoint
+    honorLabels: false
+    ## Used to pass Labels that are used by the Prometheus installed in your cluster to select Service Monitors to work with
+    ## ref: https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#prometheusspec
+    additionalLabels: {}
+
 sidecars:
 ## Add sidecars to the pod.
 ## e.g.

stable/wordpress/values.yaml

@@ -179,13 +179,17 @@ service:
   port: 80
   # HTTPS Port
   httpsPort: 443
+  # metrics Port
+  metricsPort: 9117
   ##
   ## nodePorts:
   ##   http: <to set explicitly, choose port between 30000-32767>
   ##   https: <to set explicitly, choose port between 30000-32767>
+  ##   metrics: <to set explicitly, choose port between 30000-32767>
   nodePorts:
     http: ""
     https: ""
+    metrics: ""
   ## Enable client source IP preservation
   ## ref http://kubernetes.io/docs/tasks/access-application-cluster/create-external-load-balancer/#preserving-the-client-source-ip
   ##
@@ -340,6 +344,26 @@ metrics:
   ##
   # resources: {}
 
+  ## Prometheus Service Monitor
+  ## ref: https://github.com/coreos/prometheus-operator
+  ##      https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#endpoint
+  serviceMonitor:
+    ## If the operator is installed in your cluster, set to true to create a Service Monitor Entry
+    enabled: false
+    ## Specify the namespace in which the serviceMonitor resource will be created
+    # namespace: ""
+    ## Specify the interval at which metrics should be scraped
+    interval: 30s
+    ## Specify the timeout after which the scrape is ended
+    # scrapeTimeout: 30s
+    ## Specify Metric Relabellings to add to the scrape endpoint
+    # relabellings:
+    ## Specify honorLabels parameter to add the scrape endpoint
+    honorLabels: false
+    ## Used to pass Labels that are used by the Prometheus installed in your cluster to select Service Monitors to work with
+    ## ref: https://github.com/coreos/prometheus-operator/blob/master/Documentation/api.md#prometheusspec
+    additionalLabels: {}
+
 sidecars:
 ## Add sidecars to the pod.
 ## e.g.